... be mounted in a drill Features and usage: 1. Felt bob is according to customers' requirement, select different quality class, high ... by mechanical stamping mill, made of various shape felt bob. 2. Felt bob have Elasticity, toughness, cross- strong, not depilation, easy to ... the needs of polished subject, select moderate density of felt bob. 3. Used in polished subject's inner, outer, Corner, groove ...